[PATCH] drm/panel: panasonic-vvx10f034n00: More return value fixes

[Philippe CORNU]

Hi Sean,

Reviewed-by: Philippe Cornu <philippe.cornu at st.com>

(do you mean you write patches during meetings :o ... I never did that 
and I will not ;-)

Philippe :-)

On 01/17/2018 10:37 PM, Sean Paul wrote:
> A couple more return value fixes which Philippe brought up during our
> previous review.
> 
> Suggested-by: Philippe CORNU <philippe.cornu at st.com>
> Signed-off-by: Sean Paul <seanpaul at chromium.org>
> ---
>   drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c | 17 +++++------------
>   1 file changed, 5 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
> index 91dc5a6b14f9..74a806121f80 100644
> --- a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
> +++ b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
> @@ -59,35 +59,28 @@ static inline struct wuxga_nt_panel *to_wuxga_nt_panel(struct drm_panel *panel)
>   
>   static int wuxga_nt_panel_on(struct wuxga_nt_panel *wuxga_nt)
>   {
> -	struct mipi_dsi_device *dsi = wuxga_nt->dsi;
> -	int ret;
> -
> -	ret = mipi_dsi_turn_on_peripheral(dsi);
> -	if (ret < 0)
> -		return ret;
> -
> -	return 0;
> +	return mipi_dsi_turn_on_peripheral(wuxga_nt->dsi);
>   }
>   
>   static int wuxga_nt_panel_disable(struct drm_panel *panel)
>   {
>   	struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel);
> -	int ret;
> +	int mipi_ret, bl_ret = 0;
>   
>   	if (!wuxga_nt->enabled)
>   		return 0;
>   
> -	ret = mipi_dsi_shutdown_peripheral(wuxga_nt->dsi);
> +	mipi_ret = mipi_dsi_shutdown_peripheral(wuxga_nt->dsi);
>   
>   	if (wuxga_nt->backlight) {
>   		wuxga_nt->backlight->props.power = FB_BLANK_POWERDOWN;
>   		wuxga_nt->backlight->props.state |= BL_CORE_FBBLANK;
> -		backlight_update_status(wuxga_nt->backlight);
> +		bl_ret = backlight_update_status(wuxga_nt->backlight);
>   	}
>   
>   	wuxga_nt->enabled = false;
>   
> -	return ret;
> +	return mipi_ret ? mipi_ret : bl_ret;
>   }
>   
>   static int wuxga_nt_panel_unprepare(struct drm_panel *panel)
>